I have had an issue with an illegal instruction as well, and it was tied to
use of the AESNI intrinsics. There is code in Crypto++ to read some machine
registers to determine whether the registers and instruction set for AESNI are
present in the hardware, but it does not always detect correctly. I have had
the same code run fine on one hardware platform, and crash on another with an
illegal instruction. DIsabling AESNI intrinsics solved the problem, but it
also means you won't get the performance boost of the AESNI instruction set on
hardware that has it.
A better solution would be to fix the hardware detection code, but I didn't
know what it was looking for.
Rod
From: Jeffrey Walton <[email protected]>
To: [email protected]
Sent: Saturday, December 13, 2014 4:02 PM
Subject: Re: Illegal Instruction
On Tuesday, December 2, 2014 8:34:43 PM UTC-5, Jackson Cwach wrote:
I am attempting to compile a program using Crypto++ and no matter what I try I
am getting an illegal instruction error. The code I am trying to compile is
from http://www.cryptopp.com/ wiki/TripleDES and according to GDB the problem
is:
Program received signal SIGILL, Illegal instruction.CryptoPP::Rijndael::Base::
UncheckedSetKey (this=0x733060, userKey=<optimized out>, keylen=32) at
rijndael.cpp:218218 rijndael.cpp: No such file or directory.(gdb)
I'm just taking a stab in the dark here since you haven't really provided any
information... Try building Crypto++ with
CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE set to 0. I think you can set in in
Crpyto++'s config.h.
config.h should also have some automatic detection code for
CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE. So after the automatic detection
code, do something like:
#undef CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
#define CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE 0
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